Do I need to use a custom domain with Google's G Suite (formerly Google Apps)? I can't see any way to sign up for the service without wiring up a domain. Isn't there some kind of default domain that could be used, like
This is according to GSuite:
To use Google services with your organization or team, you need a domain name. This name will be in your users' email address as in email@example.com. And it can be in your company web site address, as in www.yourdomain.com.